"I was proud of him, but there was part of me thinking, 'that's my world.' I could see the excitement he got out of it and I knew how that felt. But it wasn't me feeling it any more.

"It was only when I agreed to do Strictly Come Dancing that I realised I couldn't just go back to that. I wanted to sing, I wanted to perform. I wanted to go back to work on a stage in front of an audience."